The filter element is made of activated carbon, and it is safe and non-toxic. It can be used to get rid of stink for your family. It is a useful accessory for air purifier. Features: Made from activated carbon, safe, non-toxic and odorless. Easy installation: easy and quick to install , no tools required. It is only suitable for HP01 HP02 HP03 DP01 DP02 DP03. It can be used to remove the stink, easy to use and durable for long time use. It is an essential accessory for air purifier. Specifications: Condition: 100% Brand New Material: Activated Carbon Color: White Size: Approx. 21.4 x 21.4 x 15.8cm/ 8.42 x 8.42 x 6.22in Weight: approx. 368g/ 12.98oz Package List: 1 x Filter Element Notes: 1. Please allow 0-2cm error due to the manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. Please confirm whether your device model matches our product description before ordering. .